CHM 2025 Final Exam Final Exam Review
questions and answers 2025\2026 latest
update
Define matter - n
Ans✔
Matter is anything that occupies space and has mass.
Qs
States of matter - n
Ans✔
Matter can exist as a solid, liquid, or gas. Solid matter can be either amorphous or
crystalline.
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Classification of matter: - n
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pure substances and mixtures
Pure matter is either an element(a substance that cannot be decomposed into
simpler substances) or a compound (a substance composed of two or more
elements in fixed definite proportions).
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Mixtures - n
Ans✔
Two or more different substances, the proportions of which may vary from one
sample to the next
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,Physical change - n
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he appearance of matter may change, but its composition does not.
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Chemical change - n
Ans✔
he composition of matter changes.
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Heterogeneous - n
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Having a composition that varies from region to region
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homogeneous - n
Ans✔
Having the same composition throughout
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physical properties - n
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do not involve a change in composition
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chemical properties - n
Ans✔
involve a change in composition
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, solution - n
Ans✔
A homogeneous mixture of two or more substances
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pure substance - n
Ans✔
Pure matter is either an element(a substance that cannot be decomposed into
simpler substances) or a compound (a substance composed of two or more
elements in fixed definite proportions).
Qs
compound - n
Ans✔
(a substance composed of two or more elements in fixed definite proportions).
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element - n
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(a substance that cannot be decomposed into simpler substances)
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Energy - n
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Energy is conserved—it can be neither created nor destroyed. Units of energy are
the joule (J), the calorie (cal), the nutritional Calorie (Cal), and the kilowatt-hour
(kWh).
Qs
Endothermic energy - n
Ans✔
questions and answers 2025\2026 latest
update
Define matter - n
Ans✔
Matter is anything that occupies space and has mass.
Qs
States of matter - n
Ans✔
Matter can exist as a solid, liquid, or gas. Solid matter can be either amorphous or
crystalline.
Qs
Classification of matter: - n
Ans✔
pure substances and mixtures
Pure matter is either an element(a substance that cannot be decomposed into
simpler substances) or a compound (a substance composed of two or more
elements in fixed definite proportions).
Qs
Mixtures - n
Ans✔
Two or more different substances, the proportions of which may vary from one
sample to the next
Qs
,Physical change - n
Ans✔
he appearance of matter may change, but its composition does not.
Qs
Chemical change - n
Ans✔
he composition of matter changes.
Qs
Heterogeneous - n
Ans✔
Having a composition that varies from region to region
Qs
homogeneous - n
Ans✔
Having the same composition throughout
Qs
physical properties - n
Ans✔
do not involve a change in composition
Qs
chemical properties - n
Ans✔
involve a change in composition
Qs
, solution - n
Ans✔
A homogeneous mixture of two or more substances
Qs
pure substance - n
Ans✔
Pure matter is either an element(a substance that cannot be decomposed into
simpler substances) or a compound (a substance composed of two or more
elements in fixed definite proportions).
Qs
compound - n
Ans✔
(a substance composed of two or more elements in fixed definite proportions).
Qs
element - n
Ans✔
(a substance that cannot be decomposed into simpler substances)
Qs
Energy - n
Ans✔
Energy is conserved—it can be neither created nor destroyed. Units of energy are
the joule (J), the calorie (cal), the nutritional Calorie (Cal), and the kilowatt-hour
(kWh).
Qs
Endothermic energy - n
Ans✔
